Flight number record

DL 1122

Delta Air Lines · New York to Detroit

Route: LGA → DTW
Departs: 12:55
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1122, check with Delta Air Lines.

DL 1122 lands a B, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 365 flights, with a median arrival 13 minutes early.

On time

79.7%

Arrivals under 15 minutes late, of 355 completed flights

Avg delay

80 min

Across delayed arrivals only, not all flights

Cancelled

2.47%

National rate is 1.81%

1 hour+ late

7.6%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 13 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When DL 1122 flies

DL 1122 flies LGA to DTW without a single fixed slot. Its most common scheduled departure was 12:55, used on 99 of 365 flights, with 12:52 (67 flights) and 13:10 (60 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 12:5599 flights27.1%
Departs 12:5267 flights18.4%
Departs 13:1060 flights16.4%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 12:55 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 1122 runs level with that at 79.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 1122 next to LGA to DTW

Every carrier on LGA to DTW combined arrived on time 78.0% of the time across 4,011 flights, so DL 1122 is 2 points ahead of it. Delta flew 1,980 flights on the same city pair under all its flight numbers, including this one, and those ran 81.1% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 2 points.

DL 1122 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1122	365	79.7%	80 min	2.47%	B
All Delta Air Lines on LGA–DTW	1,980	81.1%	85 min	3.54%	B−
All carriers on LGA–DTW	4,011	78.0%	82 min	4.94%	B−
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1122 quarter by quarter

DL 1122 did not run the same all year. Its best quarter was Jan–Mar 2026 at 84.5% on time and its weakest Oct–Dec 2025 at 73.3%, a swing of 11 points on roughly 91 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202592 flights82.4%
Oct–Dec 202592 flights73.3%
Jan–Mar 202690 flights84.5%
Apr–Jun 202691 flights78.9%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 1122 ranged from 72.9% on Sunday to 84.6% on Friday. With about 52 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 1122 runs late

One category carries most of the weight here. Carrier accounts for 43% of the 5,743 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
43%
Late-arriving aircraft
29%
National Airspace System
28%
Extreme weather
0%

The largest share of delay minutes, 43%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,449 of the 5,743 delay minutes reported here. The split is drawn from 5,743 delay minutes reported on DL 1122.

Cancellations sit at 2.47% against a national 1.81%, which is ordinary. Diversions add another 0.27%.

Connections and routes

What a delay on this flight costs

7.6% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.

The 502 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

Every one of the 365 flights under DL 1122 in the data flew LGA to DTW. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 365 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking DL 1122

For a booking, read DL 1122 as 79.7% on time with 2.47% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures